BareMetal: ClangCodeModel works wrong with IAR toolchain.

I have QBS project with IAR toolchain 7.3 for ARM. I found several problems at Clang Code Model work with IAR toolchain.
1. CCM doesn`t undefine _GNUC_ macro when IAR toolchain set (_ICCARM). Both __GNUC_ and _ICCARM_, seems in project. (screen 1-2)
2. CCM marks some IAR compiler keywords as errors. (screen 3)
3. CCM doesn`t hightlight code with macro _ARMVFP_ correctly despite of compiler flag --fpu vfpv4_sp is used. IAR compiler define _ARMVFP_ macro, when calls with --fpu vfpv4_sp flag. (screen 4-5).